Costa, S.A.R.F. Richter, M. Toledo, P.M. de Moraes-Santos, H.M. <br/><br/>
Shark teeth from pirabas formation (Lower Miocene), northeastern Amazonia, Brazil 
 Shark teeth from pirabas formation (Lower Miocene), northeastern Amazonia, Brazil 

<br/><br/><label>Subjects--Topical Terms: </label><br/>CAÇÃO<br/>DENTE<br/>ANATOMIA ANIMAL<br/>TAXONOMIA